D-Link Enterprise Firewall > D-Link NetDefend Firewalls

D-link DFL-210 problem with FTP

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stravn:
Hello,

I try to connect to a FTP server but I get this "Command not understood"

Is there something blocking the connection in firewall?

I have open port tcp source: 0-65535 and destination: 21

FurryNutz:
Link>Welcome!


* What Hardware version is your DFL Look at sticker under the DFL case.
* Link>What Firmware version is currently loaded? Found on theDFLs web page under status.
* What region are you located?

Internet Service Provider and Modem Configurations

* What ISP Service do you have? Cable or DSL?
* What ISP Modem Mfr. and model # do you have?
How is the DFL wired with the ISP service? Directly to modem or ONT or thru a external router?

stravn:

--- Quote from: FurryNutz on November 03, 2017, 12:05:06 PM ---Link>Welcome!


* What Hardware version is your DFL Look at sticker under the DFL case.
* Link>What Firmware version is currently loaded? Found on theDFLs web page under status.
* What region are you located?

Internet Service Provider and Modem Configurations

* What ISP Service do you have? Cable or DSL?
* What ISP Modem Mfr. and model # do you have?
How is the DFL wired with the ISP service? Directly to modem or ONT or thru a external router?

--- End quote ---

Thanks for reply

 - version 155
 - 2.27.02.11-14424 Aug 23 2010
 - Norway

 - DSL
 - ZyXEL P2812

 - Directly to modem

This is from filezilla:

Status: Finding IP Address for .........................
Status: Connecting to ......................
Status: Connected. Waiting for welcome message ...
Status: Logged in
Status: Receives Folder List ...
Command: PWD
Response: 257 "/"
Command: TYPE I
Response: 200 Command OK.
Command: PASV
Response: 227 Entering Passive Mode (.....................)
Command: MLSD
Response: 500 Command not understood.
Error: Error receiving folder list
Status: Connection was closed closed by server

It seems like when the FTP server try to send the folder list, and something are blocking it!

GreenBay42:
Is the FTP server behind the DFL and you are trying to access it from the Internet (not local)?

or are you trying to connect to a FTP server on the Internet from a computer on your local network connected to the DFL?

FurryNutz:
I'd also ensure that your not in a double NAT condition. Is your modem a modem/router combo?
Zyxel has modems that are combo units...
The modem should be bridged to the DFL if possible or use the DMZ on the modem for the DFLs IP address it gets from the modem/router combo unit...

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